JP2013149442A - Cable coming-off prevention mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cable coming-off prevention mechanism that has large strength enough to prevent a cable from coming off, and enables the cable to be connected even after being fitted to an electronic apparatus.SOLUTION: A columnar stopper 7 is fitted having length-directional ends fitted in long holes 8 and 8 projected in a pair of stopper support pieces 4 and 4 fixed to a back of a housing 2 at a mutual interval to be positioned on both sides of a plug 3, and the stopper 7 is allowed to move along a stopper engagement surface 3a of the plug 3 and in a direction orthogonal to a length direction of the stopper 7. Consequently, support strength of the stopper 7 is secured and an operation to insert the plug 3 by retracting movement of the stopper 7 is facilitated.

Description

  The present invention relates to an improvement in a cable disconnection prevention mechanism that prevents a cable connected to a receptacle of an electronic device from being disconnected.

  Supports the stopper engagement surface, which is formed by the enlarged diameter part formed on the outer periphery of the plug connected to the receptacle of the electronic device and the cable side end surface of the plug, in the plug insertion direction to prevent the cable from being pulled out from the electronic device. As the cable disconnection prevention mechanism configured to do so, for example, the cable disconnection prevention structures disclosed in Patent Document 1 and Patent Document 2 are already known.

Among these, the cable disconnection prevention structure disclosed in Patent Document 1 is devised on the premise that two cables connected to two receptacles installed in parallel with the electronic circuit package are prevented from disconnecting.
The main part is a rectangular cable fixing bracket in which a pair of arc-shaped slits are formed at opposing positions on both ends, and the two receptacles in a state where the central portion of the cable fixing bracket is rotatably supported. And a slide shaft to which a cable fixing bracket is attached at an intermediate position.
Then, when connecting the cable to the receptacle, the cable fixing bracket is rotated so that the long side of the cable fixing bracket is orthogonal or oblique to the virtual line connecting the two receptacles. Retract both ends of the cable fixing bracket from the space, connect the cable plug to each of the two receptacles, and then connect the cable so that the long side of the cable fixing bracket is parallel to the virtual line connecting the two receptacles. By rotating the fixing bracket, one cable is inserted into each of the arc-shaped slits of the cable fixing bracket, and the cable side end face of the plug, that is, the stopper engaging surface, is inserted in the plug insertion direction on the surface of the cable fixing bracket. Supporting the cable prevents the cable from coming off.
However, such a configuration is suitable for a small-diameter cable used in an electronic circuit package or the like mounted in a housing, and is exposed to a cable that may be subjected to a large tensile force, such as a housing. Not suitable for things like power cables. This is because the end portion of the cable fixing bracket pivotally supported at the center portion only supports the cable side end surface of the plug in a cantilever state, and there is a problem in strength.

The cable disconnection prevention structure disclosed in Patent Document 2 is a combination of two U-shaped housing components having a semicircular cutout formed in the center for insertion of a cable facing each other so as to be opened and closed. The technical idea of the present invention is that, in order to attach the housing components to the housing, the folded portions provided on the left and right sides of the two housing components are connected to each other by an opening / closing means. The one in which the housing component is opened and closed in a direction in which the semicircular cutouts are in contact with and separated from each other and one of the folded portions on the left and right sides of the two housing components are connected by an opening and closing means, and this connection position Rotating the two housing components in the direction in which the other folded parts come in contact with and away from each other with the fulcrum as a fulcrum to open and close the housing components Divided into two kinds of Noto.
In either configuration, the cable is sandwiched between the semicircular cutouts of the two housing components facing each other, and the cable side end face or stopper of the plug on the receptacle side surface around the semicircular cutouts of the two housing components. Since the cable is prevented from coming off by supporting the engagement surface in the plug insertion direction, the strength is sufficient to support the power cable exposed to the outside from the housing.
However, in the former configuration in which the two U-shaped housing components are combined so as to be openable and closable, the folded portions on the left and right sides of the two housing components are in a U shape with the housing components open. Therefore, the housing component cannot be opened with the housing component attached to the housing surface. Therefore, in order to attach the housing component and prevent the cable from coming off, the housing component that is not attached to the housing is opened and the cable is sandwiched between the semicircular cutout portions of the two opposing housing components. In this way, it is necessary to attach the two housing components to the plug and then connect the plug to the receptacle, and then to fix the folded portions on both the left and right sides of the two housing components to the housing surface with screws, thus preventing cable disconnection. There is an inconvenience that the mounting work of the structure is troublesome. In addition, since an electronic device with a cable disconnection prevention structure attached in advance cannot be shipped, there is a problem that the electronic device is used while forgetting to attach the cable disconnection prevention structure.
On the other hand, the latter configuration in which one of the folded portions on the left and right sides of the two housing components is connected by an opening / closing means so that the two housing components are rotated in a direction in which the other folded portion contacts and separates from each other. In this case, since the folded portions on the left and right sides of the two housing components are maintained in a flat state even when the housing components are opened, the housing components remain attached to the housing surface. Can be opened. Therefore, the plug can be connected to the receptacle even after the housing component is attached to the housing surface, but it is still necessary to fix the other folded portion of the two housing components to the housing surface with a screw. The installation work of the cable disconnection prevention structure involves a certain amount of trouble.
When the housing component is opened with the housing component still attached to the housing surface, the other folding of the two housing components is centered on one of the folded portions on the left and right sides of the two housing components. Since it is necessary to rotate the portion along the housing surface, it is necessary to prevent interference with the rotating housing components, and inconveniences such that it becomes impossible to dispose protruding parts around the receptacle.

  In addition, as a technique for engaging a stopper for preventing an inadvertent movement or displacement of an article at a predetermined position using its own weight, for example, it is disclosed in Patent Document 3 and Patent Document 4. A stopper structure is known.

Japanese Utility Model Publication No. 7-18490 (FIGS. 1 and 3) Japanese Patent No. 3386319 (FIGS. 1-3, 4) JP 2004-87573 A (paragraph 0017, paragraphs 0042-0044, FIGS. 4-6) Japanese Unexamined Patent Publication No. 2000-152442 (paragraph 0008, FIGS. 4 to 5)

  It is an object of the present invention to have sufficient strength to prevent a cable that may be subjected to a large tensile force, and to connect a cable even after the cable disconnection prevention structure is attached to an electronic device. In addition, an object of the present invention is to provide a cable disconnection prevention mechanism that can prevent cable disconnection with a simple operation.

The cable disconnection prevention mechanism according to the present invention supports a stopper engaging surface constituted by an enlarged diameter portion formed on an outer peripheral portion of a plug connected to a receptacle of an electronic device or a cable side end surface of the plug in the plug insertion direction. A cable disconnection prevention mechanism designed to prevent the cable from being disconnected from the electronic device, and in order to achieve the above object,
A columnar stopper that supports the plug by bringing a part of the outer periphery into contact with the stopper engaging surface of the plug that is connected to the receptacle,
Attached to the housing surface of the electronic device at a distance from each other so as to be positioned on both sides of the plug connected to the receptacle, each of the longitudinal ends of the stopper is fitted inside and connected to the receptacle A pair of stoppers provided with elongated holes that allow the stopper to move in a direction along the stopper engaging surface of the plug in a state where the stopper is in contact and perpendicular to the longitudinal direction of the stopper that is in contact with the stopper engaging surface And a stopper mounting housing having a support piece.

  The cable disconnection prevention mechanism according to the present invention is formed in a pair of stopper support pieces fixed to the casing surface of the electronic device at a distance from each other so as to be positioned on both sides of the plug connected to the receptacle. A direction along the stopper engaging surface of the plug that is connected to the receptacle by fitting each of the longitudinal ends into the elongated hole and attaching a columnar stopper, and a direction orthogonal to the longitudinal direction of the stopper The stopper is allowed to move, and the stopper is moved along the slot to support the plug by bringing a part of the outer periphery of the stopper into contact with the stopper engaging surface of the plug connected to the receptacle. As a result, the cable can be easily prevented from being pulled out by moving the stopper in one direction.

  In addition, since each of the longitudinal ends of the stopper is supported by a long hole drilled in a pair of stopper support pieces fixed to the housing surface, the columnar stopper that supports the stopper engaging surface of the plug is large. Even if force is applied, the stopper will not be buckled inadvertently, and it can withstand a strong tensile force and prevent the cable from coming off.

Moreover, the stopper is moved away from the stopper engaging surface of the plug by moving the stopper in the direction along the stopper engaging surface of the plug, that is, the projection surface of the plug as viewed from the plug insertion direction. Since the stopper is moved in and out, the cable can be freely attached to and detached from the receptacle even if the stopper mounting housing is fixed to the housing surface in advance.
Accordingly, it is possible to ship an electronic device having a cable disconnection prevention structure attached in advance, and it is possible to prevent the occurrence of inconvenience that the electronic device is used while forgetting to attach the cable disconnection prevention structure.

It is the perspective view which showed the state from which the cable omission prevention mechanism of one Embodiment to which this invention was applied was attached to the housing | casing of an electronic device. It is the partial perspective view shown in the state where the cable omission prevention mechanism of the embodiment was attached to the case of electronic equipment. It is the side view shown about the attitude | position of the stopper in the case of connecting the cable which has a long plug to the receptacle of an electronic device. It is the side view shown about the attitude | position of the stopper in the case of connecting the cable which has a short plug to the receptacle of an electronic device. FIG. 5A is a cross-sectional view showing another configuration example of the stopper. FIG. 5A is a view showing the posture of the stopper when the outer peripheral surface not formed with the notch is brought into contact with the stopper engaging surface. FIG. 5B is a view showing the posture of the stopper when the outer peripheral surface having a shallow notch is brought into contact with the stopper engaging surface, and FIG. 5C is an outer peripheral surface having a medium notch formed as the stopper engaging surface. FIG. 5D is a diagram showing the posture of the stopper when the outer peripheral surface having a deep notch is brought into contact with the stopper engaging surface.

  Next, embodiments for carrying out the present invention will be specifically described with reference to the drawings.

FIG. 1 is a perspective view illustrating a state in which a cable disconnection prevention mechanism 1 according to an embodiment to which the present invention is applied is attached to a housing 2 of an electronic device, and FIG. 2 is a partial perspective view thereof.
3 is a side view showing the posture of the stopper 7 when the cable 10 having the longer plug 3 is connected to the receptacle of the electronic device, and FIG. 4 is a side view showing the cable 10 having the shorter plug 3 connected to the electronic device. It is the side view shown about the attitude | position of the stopper 7 in the case of connecting with a receptacle.

  As shown in FIGS. 1 and 2, the main part of the cable disconnection prevention mechanism 1 of this embodiment is located on both sides of a plug 3 connected to a receptacle (not shown) included in the housing 2 of the electronic device. A pair of stopper support pieces 4 and 4 fixed to the back surface of the housing 2 at a distance from each other and a joint piece 5 connecting the upper ends of the stopper support pieces 4 and 4 excluding the base portion on the mounting side from each other The stopper 3 is supported by a stopper engaging surface 3a formed by an integrally formed stopper mounting housing 6 and an end surface on the cable 10 side of the plug 3 connected to the receptacle, thereby supporting the plug 3. It is constituted by a columnar stopper 7.

  Here, as an example, the plug 3 in which the stopper engaging surface is constituted by the end surface on the cable side of the plug is shown, but the stopper engaging surface of the plug is a diameter-enlarged portion formed on the outer peripheral portion other than the end surface of the plug. It may be configured by (overhang portion).

  Each of the stopper support pieces 4 and 4 constituting a part of the stopper mounting housing 6 is in a direction along the stopper engaging surface 3a of the plug 3 in a state of being connected to the receptacle and abuts against the stopper engaging surface 3a. In this embodiment, there is a long hole 8 that allows the stopper 7 to move along a direction perpendicular to the longitudinal direction of the stopper 7, that is, the direction of the alternate long and short dash line LL shown in FIGS. 3 and 4. The pair of stopper support pieces 4 and 4 are vertical in a state where the housing 2 of the electronic device is placed upright, and the long holes 8 and 8 of the stopper support pieces 4 and 4 are offset upward from the center position of the plug 3. The stopper mounting housing 6 is fixed to the back surface of the housing 2 of the electronic device so that the position is in the right position.

  Each of the end portions in the longitudinal direction of the stopper 7 is fitted in the elongated holes 8 and 8 in such a state that the stopper 7 can vertically move and rotate around the axis of the stopper 7 along the elongated holes 8 and 8. The stopper 7 is prevented from dropping out of the long holes 8 and 8 by a washer-like flange 9 fixed to each end face in the longitudinal direction of the stopper 7 using a tapping screw or the like.

  As shown in FIGS. 3 and 4, the stopper 7 in this embodiment is formed in a rectangular shape having a different aspect ratio in the cross-section perpendicular to the longitudinal direction, and thus allows the stopper 7 to rotate around its axis. Therefore, the width of the long holes 8 and 8 needs to be equal to or greater than the length of the diagonal line of the rectangular cross section of the stopper 7.

  The cable disconnection prevention mechanism 1 configured by attaching the stopper 7 and the flanges 9 and 9 to the stopper mounting housing 6 may be fixed in advance to the back surface of the housing 2 of the electronic device by spot welding or screwing, or Although it is possible to attach to the housing 2 of the electronic device after product shipment, there is a possibility that the user may forget to attach the cable disconnection prevention structure 1, so it is attached to the housing 2 of the electronic device before the product is shipped. It is desirable to keep it.

The joining piece 5 constituting a part of the stopper mounting housing 6 is not an indispensable component for constituting the stopper mounting housing 6, but the pair of stopper supporting pieces 4, 4 and each stopper supporting piece 4, 4 The folded portions 4a and 4a, the joining piece 5 connecting the upper ends of the stopper support pieces 4 and 4, and the long holes 8 and 8 of the stopper support pieces 4 and 4 are a series of bendings using press working. Since there is no particular cost detriment even if the joining piece 5 is provided, positioning work when attaching the stopper mounting housing 6 to the back surface of the housing 2 of the electronic device is possible. If the ease and the mechanical strength of the stopper mounting housing 6 are taken into consideration, the joining piece 5 should be provided.
When the joining piece 5 is used as a constituent element of the stopper mounting housing 6, it is possible to ensure a sufficient field of view when the plug 3 is connected to the receptacle of the housing 2 to which the cable disconnection prevention mechanism 1 is attached. 1 is provided with a joining piece 5 that connects only the upper ends excluding the base portions of the pair of stopper support pieces 4, 4, and as shown in FIG. 1, the periphery of the base portions of the stopper support pieces 4, 4, that is, the position of the receptacle The tip of the plug 3 is configured so that it can be easily seen through the through hole formed between the stopper support pieces 4 and 4.

  When connecting the cable 10 to the receptacle of the housing 2 to which the cable disconnection prevention structure 1 is attached in advance, first, the flanges 9 and 9 located at both ends in the longitudinal direction of the stopper 7 are picked up by fingers from both sides and pulled up. The terminal provided at the tip of the plug 3 is inserted into the receptacle in the same manner as in the prior art.

  In this embodiment, in particular, the position of the receptacle and the state of the tip of the plug 3 can be easily visually recognized from above through the through holes surrounded by the stopper support pieces 4, 4 and the joining piece 5 and the back surface of the housing 2. Even in the case of an electronic device to which the cable disconnection prevention structure 1 is attached in advance, the cable 10 can be easily connected.

  Next, the finger is released from the flanges 9 and 9 of the stopper 7 with the terminal at the tip of the plug 3 inserted into the receptacle. Then, since the stopper support pieces 4 and 4 are installed vertically, the stopper 7 falls by its own weight along the long holes 8 and 8 of the stopper support pieces 4 and 4, as shown in FIG. 3 or FIG. It naturally fits in a position where it abuts against the stopper engaging surface 3a of the plug 3, and the outer peripheral portion supports the stopper engaging surface 3a in the plug insertion direction to prevent the cable 10 from being pulled out from the housing 2 of the electronic device. To do.

  In this embodiment, since the cross-sectional shape of the stopper 7 is formed in a rectangular shape with different aspect ratios, the rotational posture around the axis of the stopper 7 is changed in 90 ° increments, and the thickness of the stopper 7 with respect to the insertion direction of the plug 3 is changed. Can be appropriately dealt with by the cable 10 having the longer plug 3 (see FIG. 3) and the cable 10 having the shorter plug 3 (see FIG. 4). .

  However, if the stopper 7 does not fit in the proper position due to the fall of the stopper 7 due to its own weight, the flanges 9 and 9 are again picked by fingers from both sides, and the stopper 7 is rotated around the axis, and the posture is changed as shown in FIG. It is necessary to correct the state as shown in FIG.

  In addition, instead of the rectangular stopper 7 having a different aspect ratio, the cross-sectional shape perpendicular to the longitudinal direction is square at each of the longitudinal ends as shown in FIG. One end in the width direction of each of the three surfaces 11a, 11b, and 11c that is formed and is part of the outer periphery in the portion excluding each of the end portions in the longitudinal direction, that is, in the central portion in the longitudinal direction You may make it utilize the column-shaped stopper 11 which formed the rectangular-shaped notch 12a, 12b, 12c from which a depth mutually differs in a part.

  In this case, the width of the long holes 8 and 8 is formed to be equal to the length of the diagonal line of the square cross section at both ends of the stopper 11.

  Here, it is assumed that the depth of the notch 12a formed at one end in the width direction of the surface 11a in the stopper 11 is h1, and the depth of the notch 12b formed at one end in the width direction of the surface 11b. h2, the depth of the notch 12c formed at one end in the width direction of the surface 11c is defined as h3, and the length of the plug 3 in which the surface not formed with the notch is in contact with the stopper engaging surface 3a is defined as x0. If so, as shown in FIGS. 5 (a) to 5 (d), the bottom of the different notches 12a, 12b, and 12c is changed to the stopper engagement of the plug 3 by changing the rotational posture around the axis of the stopper 11 in 90 ° increments. By contacting the mating surface 3a, it is possible to cope with four types of plugs having different lengths such as a plug of length x0, a plug of length x0 + h1, a plug of length x0 + h2, and a plug of length x0 + h3.

  As described above, the cable disconnection prevention mechanism 1 according to this embodiment is provided on the back surface of the casing 2 of the electronic device at a distance from each other so as to be positioned on both sides of the plug 3 that is connected to the receptacle. A plug in a state of being connected to the receptacle by attaching a columnar stopper 7 by fitting each of the end portions in the longitudinal direction into the elongated holes 8 and 8 formed in the pair of fixed stopper supporting pieces 4 and 4. 3 is allowed to move along the direction of the stopper engaging surface 3a and perpendicular to the longitudinal direction of the stopper 7, that is, along the direction of the one-dot chain line LL shown in FIGS. The stopper 7 is moved along the long holes 8, 8, and a part of the outer periphery of the stopper 7 is brought into contact with the stopper engaging surface 3 a of the plug 3 connected to the receptacle. 3 is supported, the stopper 7 can be easily moved away from the stopper engaging surface 3a by moving the stopper 7 in one direction, and the cable 10 can be easily locked and unlocked. (Effect based on the configuration specified in Appendix 1).

  Each of the end portions in the longitudinal direction of the stopper 7, that is, both end portions is supported by the long holes 8, 8 formed in the pair of stopper support pieces 4, 4 fixed to the back surface of the housing 2, and Since a part of the upper ends of the stopper support pieces 4 and 4 are integrally connected by the joining piece 5, even if a large force is applied to the columnar stopper 7 supporting the stopper engaging surface 3a of the plug 3, the stopper 7 The stopper support pieces 4 and 4 are not buckled inadvertently, and can withstand the tensile force from the outside and reliably prevent the cable from being pulled out (the configuration specified in Appendix 1 and Appendix 5). Based effect).

In addition, the stopper 7 is moved in one direction along the long holes 8 and 8 so that the stopper 7 is brought into and out of contact with the stopper engaging surface 3a of the plug 3, that is, the plug 3 viewed from the insertion direction of the plug 3. Since the stopper 7 is moved in and out of the projection surface, the cable 10 can be freely attached to and detached from the receptacle even if the stopper mounting housing 6 is fixed to the rear surface of the housing 2 in advance.
Therefore, it is possible to ship an electronic device to which the cable disconnection prevention structure 1 is attached in advance, and it is possible to prevent the occurrence of inconvenience that the electronic device is used while the user forgets to attach the cable disconnection prevention structure 1. (Effect based on the configuration specified in Appendix 1).

  In particular, the pair of stopper support pieces 4 and 4 are vertical in a state where the housing 2 of the electronic device is placed upright, and the long holes 8 and 8 of the stopper support pieces 4 and 4 are offset upward from the center position of the plug 3. Since the stopper mounting housing 6 is fixed to the back surface of the housing 2 of the electronic device so as to be in the position, the terminal at the tip of the plug 3 is inserted into the receptacle, and fingers are inserted from the flanges 9 and 9 of the stopper 7. The stopper 7 falls by its own weight along the elongated holes 8 and 8 of the stopper support pieces 4 and 4 by a simple operation that only releases, and naturally fits in a position where it comes into contact with the stopper engaging surface 3a of the plug 3. The stopper engaging surface 3a can be supported in the plug insertion direction by a part of (the effect based on the configuration specified in Appendix 4).

  Further, since the joining piece 5 of the stopper mounting housing 6 is formed only at the upper end portion excluding the base portion on the mounting side of the pair of stopper supporting pieces 4, 4, it is formed between the stopper supporting pieces 4, 4. The position of the receptacle and the state of the tip of the plug 3 can be easily seen from above through the through hole, and the cable 10 can be easily connected even in the case of an electronic device to which the cable disconnection prevention structure 1 is attached in advance. At the same time, the strength of the stopper support pieces 4 and 4 is also ensured (effect based on the configuration specified in Appendix 5).

  In addition, since the stopper 7 is formed in a rectangular shape having a cross-sectional shape orthogonal to the longitudinal direction and having a different aspect ratio, the thickness of the stopper 7 with respect to the insertion direction of the plug 3 is changed by changing the rotational posture around the axis of the stopper 7. By changing the above, it is possible to appropriately cope with the cable 10 having the longer plug 3 and the cable 10 having the shorter plug 3 (effect based on the configuration specified in Appendix 2).

  Further, each of the end portions in the longitudinal direction has a square cross-sectional shape orthogonal to the longitudinal direction, and the portion excluding each of the end portions in the longitudinal direction constitutes a part of the outer periphery 3. By adopting a stopper 7 in which rectangular notches 12a, 12b, and 12c having different depths are formed at one end in the width direction of each of the surfaces 11a, 11b, and 11c, four types of lengths can be obtained. It is also possible to correspond to the plug 3 (effect based on the configuration specified in Appendix 3).

A part or all of the embodiment disclosed above can be appropriately expressed by the description shown in the following supplementary notes, but the form for carrying out the invention and the technical idea of the invention are not limited to these. Absent.
For example, the stopper 7 does not necessarily have to move toward the stopper engaging surface 3a of the plug 3 using its own weight, but uses an urging means that moves the stopper 7 against gravity, such as a spring. It may be something that moves.
In that case, the stopper 7 can move toward the stopper engaging surface 3a in a direction along the stopper engaging surface 3a regardless of the direction of gravity. The stopper supporting pieces 4 and 4 having the configuration 8 are configured to guide the movement of the stopper 7 from the lower side of the stopper engaging surface 3a toward the stopper engaging surface 3a, or on the side of the stopper engaging surface 3a. The structure which guides the movement of the stopper 7 toward the stopper engaging surface 3a from one side may be sufficient.

[Appendix 1]
Plug the stopper engaging surface (3a), which is composed of the enlarged diameter portion formed on the outer periphery of the plug (3) connected to the receptacle of the electronic device and the end surface of the plug (3) on the cable (10) side. In the cable disconnection prevention mechanism (1) that supports the direction to prevent the cable (10) from disconnecting from the electronic device,
A columnar stopper (7) for supporting the plug (3) by bringing a part of the outer periphery into contact with the stopper engaging surface (3a) of the plug (3) connected to the receptacle;
The plug (3) connected to the receptacle is fixed to the surface of the casing (2) of the electronic device so as to be positioned on both sides of the plug (3), and the longitudinal end of the stopper (7) Of the stopper (7) which is in a direction along the stopper engaging surface (3a) of the plug (3) which is in the state of being internally fitted and connected to the receptacle and which is in contact with the stopper engaging surface (3a). Stopper mounting housing (6) having a pair of stopper support pieces (4, 4) having long holes (8, 8) that allow the stopper (7) to move in a direction (LL) perpendicular to the longitudinal direction. And a cable disconnection prevention mechanism (1).

[Appendix 2]
The stopper (7) is formed in a rectangular shape having a different aspect ratio in a cross section perpendicular to the longitudinal direction thereof,
The cable disconnection prevention mechanism (1) according to appendix 1, wherein a width of the elongated hole (8, 8) is formed to be equal to a length of a diagonal line of the rectangular cross section.

[Appendix 3]
The stopper (7) has a square cross section orthogonal to the longitudinal direction at each of its longitudinal ends, and the outer periphery of the stopper (7) except for each of the longitudinal ends. Rectangular notches (12a, 12b, 12c) having different depths are formed at one end in the width direction of each of the three surfaces (11a, 11b, 11c) constituting a part of
The cable omission prevention mechanism (1) according to appendix 1, wherein a width of the elongated hole (8, 8) is formed to be equal to a length of a diagonal line of the square cross section.

[Appendix 4]
In a state where the electronic device is placed in a normal position, the pair of stopper support pieces (4, 4) are vertical, and the long holes (8, 8) of the pair of stopper support pieces (4, 4) are connected to the plug ( 3) The stopper mounting housing (6) is fixed to the surface of the housing (2) of the electronic device so that the position is offset upward from the center position of 3). The cable disconnection prevention mechanism (1) according to any one of 2 and appendix 3.

[Appendix 5]
The stopper mounting housing (6) has a pair of stopper support pieces (4, 4) and a joining piece (5) that connects the upper ends of the pair of stopper support pieces (4, 4) except for the bases thereof. The cable disconnection prevention mechanism (1) according to appendix 4, characterized in that it is integrally formed.

  The cable disconnection prevention mechanism of the present invention can be used for various cables exposed to the outside from the casing, including power cables for electronic devices.

DESCRIPTION OF SYMBOLS 1 Cable removal prevention mechanism 2 Electronic equipment housing 3 Plug 3a Stopper engagement surface 4 Stopper support piece 4a Turn-up part 5 Joining piece 6 Stopper mounting housing 7 Stopper 8 Elongation hole 9 Flange 10 Cable 11 Stopper 11a, 11b, 11c Surfaces 12a, 12b, 12c constituting part of the rectangular cutout

Claims (5)

Supports the stopper engagement surface, which is formed by the enlarged diameter part formed on the outer periphery of the plug connected to the receptacle of the electronic device and the cable side end surface of the plug, in the plug insertion direction to prevent the cable from being pulled out from the electronic device. In the cable disconnection prevention mechanism designed to
A columnar stopper that supports the plug by bringing a part of the outer periphery into contact with the stopper engaging surface of the plug that is connected to the receptacle,
Attached to the housing surface of the electronic device at a distance from each other so as to be positioned on both sides of the plug connected to the receptacle, each of the longitudinal ends of the stopper is fitted inside and connected to the receptacle A pair of stoppers provided with elongated holes that allow the stopper to move in a direction along the stopper engaging surface of the plug in a state where the stopper is in contact and perpendicular to the longitudinal direction of the stopper that is in contact with the stopper engaging surface A cable disconnection prevention mechanism comprising a stopper mounting housing having a support piece. The stopper is formed in a rectangular shape having a different aspect ratio in a cross section perpendicular to the longitudinal direction,
2. The cable disconnection prevention mechanism according to claim 1, wherein a width of the elongated hole is formed to be equal to a length of a diagonal line of the rectangular cross section. The stopper has a square cross-sectional shape perpendicular to the longitudinal direction at each of its longitudinal ends, and a part of the outer periphery of each of the stoppers excluding each of the longitudinal ends. Rectangular notches with different depths are formed at one end in the width direction of each of the three surfaces constituting
2. The cable disconnection prevention mechanism according to claim 1, wherein a width of the elongated hole is formed to be equal to a length of a diagonal line of the square-shaped cross section.   In a state where the electronic device is placed in a straight line, the pair of stopper support pieces are vertical, and the long holes of the pair of stopper support pieces are offset upward from the center position of the plug, 4. The cable disconnection prevention mechanism according to claim 1, wherein the stopper mounting housing is fixed to a housing surface of an electronic device. 5.   The said stopper mounting housing is integrally formed by the joining piece which mutually connects the upper end part except the base part of said pair of stopper support piece and said pair of stopper support piece. Cable removal prevention mechanism.

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